Electrical transmission or interconnection systems – Vehicle mounted systems – Automobile
Patent
1998-03-06
2000-03-14
Paladini, Albert W.
Electrical transmission or interconnection systems
Vehicle mounted systems
Automobile
180287, 34082569, 34082572, 340426, 701 2, H04Q 100
Patent
active
060376759
ABSTRACT:
A car remote control system utilizing a signal in the form of electromagnetic wave or infrared ray called `keyless entry`. When receiving a predetermined wake-up signal, an MPU is once operated even when the received input signal is a noise signal to perform only judging operation of whether or not the input signal is normal. Only when judging that the input signal is a normal wake-up signal, the MPU controllably causes an electronic circuit to be shifted to a usual operation mode. When judging that the input signal is the noise signal prior to full input of the tuner signal, the MPU immediately shifts to a sleep mode. Thereby current consumption of an electronic control circuit can be suppressed.
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Kon'i Mitsuru
Yoshida Tatsuya
Hitachi , Ltd.
Hitachi Car Engineering Co. Ltd.
Paladini Albert W.
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